# -*- coding: utf-8 -*-
"""
Routing client for the IRIS federator routing service.
:copyright:
The ObsPy Development Team (devs@obspy.org)
Celso G Reyes, 2017
IRIS-DMC
:license:
GNU Lesser General Public License, Version 3
(https://www.gnu.org/copyleft/lesser.html)
"""
import collections
from ..client import get_bulk_string
from .routing_client import (
BaseRoutingClient, _assert_filename_not_in_kwargs,
_assert_attach_response_not_in_kwargs)
[docs]class FederatorRoutingClient(BaseRoutingClient):
[docs] def __init__(self, url="http://service.iris.edu/irisws/fedcatalog/1",
include_providers=None, exclude_providers=None,
debug=False, timeout=120, **kwargs):
"""
Initialize a federated routing client.
All parameters except ``url`` are passed on to the
:class:`~obspy.clients.fdsn.routing.routing_client.BaseRoutingClient`
parent class
:param url: The URL of the routing service.
:type url: str
"""
BaseRoutingClient.__init__(self, debug=debug, timeout=timeout,
include_providers=include_providers,
exclude_providers=exclude_providers,
**kwargs)
self._url = url
# Parameters the routing service can work with. If this becomes a
# standardized service and more implementations show up we should also
# parse the WADL files - but right now this would just complicate
# things.
self.kwargs_of_interest = [
"includeoverlaps", "level", "network", "station", "channel",
"location", "starttime", "endtime", "startbefore", "endbefore",
"startafter", "endafter", "minlatitude", "maxlatitude",
"minlongitude", "maxlongitude", "latitude", "longitude",
"minradius", "maxradius"]
[docs] @_assert_filename_not_in_kwargs
def get_stations(self, **kwargs):
"""
Get stations from multiple data centers.
It will pass on most parameters to the federated routing service.
They will also be passed on to the individual FDSNWS implementations
if a service supports them.
The ``filename`` parameter of the single provider FDSN client is not
supported.
This can route on a number of different parameters, please see the
web site of the
`IRIS Federator <https://service.iris.edu/irisws/fedcatalog/1/>`_
for details.
"""
return super(FederatorRoutingClient, self).get_stations(**kwargs)
[docs] @_assert_filename_not_in_kwargs
def get_stations_bulk(self, bulk, **kwargs):
"""
Get stations from multiple data centers.
It will pass on most parameters to the federated routing service.
They will also be passed on to the individual FDSNWS implementations
if a service supports them.
The ``filename`` parameter of the single provider FDSN client is not
supported.
This can route on a number of different parameters, please see the
web site of the
`IRIS Federator <https://service.iris.edu/irisws/fedcatalog/1/>`_
for details.
"""
bulk_params = ["network", "station", "location", "channel",
"starttime", "endtime"]
for _i in bulk_params:
if _i in kwargs:
raise ValueError("`%s` must not be part of the optional "
"parameters in a bulk request." % _i)
params = collections.OrderedDict()
for k in self.kwargs_of_interest:
if k in kwargs:
params[k] = str(kwargs[k])
params["format"] = "request"
bulk_str = get_bulk_string(bulk, params)
r = self._download(self._url + "/query", data=bulk_str,
content_type='text/plain')
split = self._split_routing_response(
r.content.decode() if hasattr(r.content, "decode") else r.content,
service="station")
return self._download_stations(split, **kwargs)
[docs] @staticmethod
def _split_routing_response(data, service):
"""
Splits the routing responses per data center for the federator output.
Returns a dictionary with the keys being the root URLs of the fdsnws
endpoints and the values the data payloads for that endpoint.
:param data: The return value from the EIDAWS routing service.
"""
if service.lower() == "dataselect":
key = "DATASELECTSERVICE"
elif service.lower() == "station":
key = "STATIONSERVICE"
else:
raise ValueError("Service must be 'dataselect' or 'station'.")
split = collections.defaultdict(list)
current_key = None
for line in data.splitlines():
line = line.strip()
if not line:
continue
if "http://" in line or "https://" in line:
if key not in line:
continue
current_key = line[len(key) + 1:line.rfind("/fdsnws")]
continue
# Anything before the first data center can be ignored.
if current_key is None:
continue
split[current_key].append(line)
return {k: "\n".join(v) for k, v in split.items()}